chore(deps-dev): Bump rector/rector from 1.2.10 to 2.0.3

Bumps [rector/rector](https://github.com/rectorphp/rector) from 1.2.10 to 2.0.3.
- [Release notes](https://github.com/rectorphp/rector/releases)
- [Commits](rectorphp/rector@1.2.10...2.0.3)

---
updated-dependencies:
- dependency-name: rector/rector
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

composer.json

@@ -24,7 +24,7 @@
 	"require-dev": {
 		"nextcloud/coding-standard": "^1.2",
 		"nextcloud/ocp": "dev-master",
-		"rector/rector": "^1.2"
+		"rector/rector": "^2.0"
 	},
 	"scripts": {
 		"lint": "find . -name \\*.php -not -path './tests/*' -not -path './vendor/*' -not -path './build/*' -print0 | xargs -0 -n1 php -l",